CVE-2022-49697— Linux kernel 安全漏洞
可能的 ATT&CK 技术 1AI
T1564.004 · NTFS File Attributes影响版本矩阵 12
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | edbf8c01de5a104a71ed6df2bf6421ceb2836a8e< 8ffe2e50e9678c8373027492035f094b130437f1 | affected |
edbf8c01de5a104a71ed6df2bf6421ceb2836a8e< 516760f1d2979903eaad5b437256913c5cd98416 | affected | ||
edbf8c01de5a104a71ed6df2bf6421ceb2836a8e< b03607437ea81b850599f705096b05b85e7a4a71 | affected | ||
edbf8c01de5a104a71ed6df2bf6421ceb2836a8e< 5a62b5ba4c0ce8315b6382cd4ace81b48cd121cd | affected | ||
edbf8c01de5a104a71ed6df2bf6421ceb2836a8e< 3046a827316c0e55fc563b4fb78c93b9ca5c7c37 | affected | ||
5.2 | affected | ||
< 5.2 | unaffected | ||
5.4.202≤ 5.4.* | unaffected | ||
| … +4 条更多 | |||
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一、 漏洞 CVE-2022-49697 基础信息
漏洞信息
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Vulnerability Title
bpf: Fix request_sock leak in sk lookup helpers
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix request_sock leak in sk lookup helpers A customer reported a request_socket leak in a Calico cloud environment. We found that a BPF program was doing a socket lookup with takes a refcnt on the socket and that it was finding the request_socket but returning the parent LISTEN socket via sk_to_full_sk() without decrementing the child request socket 1st, resulting in request_sock slab object leak. This patch retains the existing behaviour of returning full socks to the caller but it also decrements the child request_socket if one is present before doing so to prevent the leak. Thanks to Curtis Taylor for all the help in diagnosing and testing this. And thanks to Antoine Tenart for the reproducer and patch input. v2 of this patch contains, refactor as per Daniel Borkmann's suggestions to validate RCU flags on the listen socket so that it balances with bpf_sk_release() and update comments as per Martin KaFai Lau's suggestion. One small change to Daniels suggestion, put "sk = sk2" under "if (sk2 != sk)" to avoid an extra instruction.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于sk查找助手中存在request_sock泄漏。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-49697 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-49697 补丁与修复 (5)
同批安全公告 · Linux · 2025-02-26 · 共 706 条
| CVE-2022-49149 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49561 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49362 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49201 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49194 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49093 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49260 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49418 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49094 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49407 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49280 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49356 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49058 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-49500 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49535 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49114 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49470 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49111 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49238 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49519 | 8.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 706 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-49697
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